CN219542793U

CN219542793U - Super-precision linear grinding device of grinding machine

Info

Publication number: CN219542793U
Application number: CN202221290172.3U
Authority: CN
Inventors: 李颖仲; 肖雷; 于启军; 周全; 丛辉滋
Original assignee: Weihai Guangyu Dacheng Cnc Machine Tool Co ltd
Current assignee: Weihai Guangyu Dacheng Cnc Machine Tool Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2023-08-18
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a super-precision linear grinding device of a grinding machine, which is characterized by comprising a box body, an upper counterweight plate, a lower counterweight plate, a rotating shaft, a linear reciprocating vibration device, a rotating shaft vibration absorbing device, a driving part, a positioning disc, a locking nut, an upper left connecting rod, a lower left connecting rod, an upper guide post and a lower guide post.

Description

Super-precision linear grinding device of grinding machine

Technical Field

The utility model relates to the technical field of metal grinding equipment, in particular to an ultra-precise linear grinding device of a grinding machine.

Background

Along with the development of scientific technology, the requirements on the precision of production devices and various testing devices in various industries are higher and higher, the corresponding requirements on the dimensional precision and the surface of parts forming the production devices and the testing devices are also improved, and before assembly, a plurality of parts are required to be ground and polished, and related equipment is a grinding machine.

In the mechanical industry, for machining the surface of a high-precision part, a grinding machine with a vibration mechanism is generally adopted for machining, and the vibration mechanism of the grinding machine is an eccentric shaft mechanism, for example: the publication number disclosed on the net is CN203109752U, and the patent name is: the utility model patent of a precision grinding machine, the structure is that the servo motor drives the eccentric shaft to reciprocate left and right by a corresponding angle, and drives a sliding rail part which moves up and down along a forced oil feeding static pressure sliding rail by a connecting rod connected with one end of the eccentric shaft, and the high-speed main shaft is matched to drive a grinding wheel, so that dynamic load caused by the eccentric shaft of the eccentric shaft mechanism on a support not only causes vibration of the whole mechanical equipment to generate noise, but also accelerates bearing abrasion, thereby causing high-frequency fatigue damage of rotor parts and forced vibration damage of certain parts of the support part, reducing the service life of the mechanical equipment. Thus, there is a need to eliminate unbalanced vibrations of the rotor system by an efficient method.

Thus, up to now, no vibration grinding apparatus has appeared on the market in which the rotor can truly achieve dynamic balance in motion.

Disclosure of Invention

The utility model aims to solve the defects of the prior art and provide the super-precision linear grinding device of the grinding machine, which has the advantages of novel structure, high grinding precision, high workpiece processing stability, high working efficiency, no noise and long service life.

The technical scheme adopted for solving the technical problems is as follows:

the super-precision linear grinding device of the grinding machine is characterized by comprising a box body 1, an upper counterweight plate 2, a lower counterweight plate 3, a rotating shaft 4, a linear reciprocating vibration device 7, a rotating shaft vibration absorbing device 8, a driving part 9, a positioning disk 10, a locking nut 11, an upper left connecting rod 12, a lower left connecting rod 13, an upper guide post 14 and a lower guide post 15,

a support shaft shoulder 4-1 is arranged in the middle of the rotating shaft 4, a left eccentric shaft section 4-2, a left positioning disk fixing section 4-3 and a left locking threaded section 4-4 are sequentially and fixedly arranged at the left end of the support shaft shoulder 4-1, a right eccentric shaft section 4-5, a right support bearing mounting section 4-6, a right locking threaded section 4-7 and a driving component connecting section 4-8 are sequentially and fixedly arranged at the right end of the support shaft shoulder, the axis of the left eccentric shaft section 4-2 is downwards offset relative to the axis of the shaft shoulder 4-1, the axis of the right eccentric shaft section 4-5 is upwards offset relative to the shaft shoulder 4-1, the eccentric amounts of the left eccentric shaft section 4-2 and the right eccentric shaft section 4-5 are equal and are opposite in offset direction, the rotating shaft is inserted into a box body, the support shaft shoulder is fixedly connected with a support plate fixed at the center of the box body through a bearing, a rotating shaft vibration absorbing device 8 is arranged on the left eccentric shaft section at the left end of the support shaft shoulder, a linear reciprocating vibration device is arranged on a right eccentric shaft section at the right end, the rotating shaft vibration absorbing device is locked on the left eccentric shaft section at the left end of a supporting shaft shoulder through a positioning disc 10 fixedly sleeved on a left positioning disc fixing section 4-3 and a locking nut 11 in threaded connection with a left locking threaded section 4-4, the upper end of the rotating shaft vibration absorbing device 8 passes through a moving part perforation arranged at the upper end of a box body 1 to be fixedly connected with an upper counterweight plate 2 at the outer part of the box body 1 in a vertically movable way through a left upper connecting rod 12, the lower end passes through a moving part perforation arranged at the lower end of the box body 1 to be fixedly connected with a lower counterweight plate 3 at the outer part of the box body 1 in a vertically movable way through a left lower connecting rod 13, the upper end of the linear reciprocating vibration device is fixedly connected with an upper guide post 14 which movably penetrates into the box body 1, the lower end is fixedly connected with a lower guide post 15 which movably passes through the inside of the box body 1, the linear reciprocating vibration device is positioned on a right eccentric shaft section at the right end of the positioning of the supporting shaft shoulder through a bearing sleeve 6 arranged on a right supporting bearing mounting section 4-6 and a locking nut 11 which is connected with the right threaded connecting section in a threaded manner, the outer end of the bearing sleeve 6 is fixedly connected with the box body through a bearing, the positioning disc is in clearance fit with the box body, a driving part 9 is fixed on the driving part connecting section 4-7,

by arranging the linear reciprocating vibration device 7 and the rotating shaft vibration absorbing device 8 with opposite eccentric directions and same weight at the two ends of the shaft shoulder 4-1, the centrifugal force generated by the linear reciprocating eccentric motion of the linear reciprocating vibration device is exactly balanced by the reverse centrifugal force balanced by the rotating shaft vibration absorbing device at the left end of the shaft shoulder in the process of driving the vibrating head to perform up-down linear reciprocating motion grinding, so that vibration and noise generated by the eccentric motion of the rotating shaft 4 in the rotating process are eliminated, the ultra-precise machining performance and working efficiency are remarkably improved, the service life is prolonged, and the ultra-precise grinding is realized.

The utility model provides a rotating shaft vibration damping device 7, which comprises a left rotating bearing 7-1, a left linear guide rail 7-2, a left screw 7-3, a left disc spring 7-4, a left pressing block 7-5, a left upper sliding plate 7-6, a left lower sliding plate 7-7, a left upper needle roller plate 7-8, a left lower rolling needle plate 7-9, a left support plate 7-10, a left upper baffle 7-11, a left locating pin 7-12, a left lower bottom plate 7-13, a left upper top plate 7-14 and a left lower baffle 7-15, wherein the left end face of the left upper sliding plate 7-6 is provided with a left upper square groove, the front side and the rear side are respectively provided with a left upper sliding rail, the lower end of the left upper square groove extends downwards to be open, the bottom face of the left upper square groove is downwards deviated from the center to be provided with a lower bearing perforation, the right end face of the left lower sliding plate is provided with a left lower square groove, the front side and the rear side are respectively provided with a left lower sliding rail, the upper end of the left lower square groove extends upwards to be opened, the bottom surface of the left lower square groove is provided with an upper bearing perforation which is upwards deviated from the center, the inner ring of the left rotary bearing 7-1 is fixedly sleeved with the left eccentric shaft section 4-2, the outer ring sequentially passes through the lower bearing perforation of the left lower sliding plate 7-7 and the upper bearing perforation of the left upper sliding plate 7-6 from left to right in a clearance way, the two sides of the left lower sliding plate 7-7 and the left upper sliding plate 7-6 are respectively connected with the left linear guide rail 7-2 fixed on the inner side of the box body 1 in an up-down sliding way through the left upper sliding rail and the left lower sliding rail, the upper part of the left lower sliding plate 7-7 is movably inserted into the left upper square groove of the left upper sliding plate 7-6 and moves relatively to the left upper square groove of the left upper sliding plate 7-6, the lower end is fixedly connected with the left lower connecting rod 13, the lower part of the left upper slide plate 7-6 is movably inserted into the left lower square groove of the left lower slide plate 7-7 and moves relative to the left lower square groove of the left lower slide plate 7-7, the upper end is fixedly connected with the left upper connecting rod 12,

the upper end surface of the left lower sliding block in the left upper square groove is provided with a left upper needle roller plate 7-8 in a rolling manner, a roller of the left upper needle roller plate 7-8 is provided with a left pressing block 7-5 in a rolling manner, an eccentric moving space is arranged between the left pressing block and the left upper top plate 7-14 of the left upper square groove, a left disc spring is arranged in the eccentric moving space, the lower end of the left disc spring 7-4 is in contact with the left pressing block 7-5, the upper end of the left disc spring 7-4 is in contact with the left upper top plate, the left screw 7-4 movably penetrates through a screw perforation arranged on the left upper top plate and the lower end of the left disc spring 7-4 to be in threaded connection with the left pressing block 7-5, two sides of the left pressing block 7-5 are respectively in sliding connection with the inner walls of the two sides of the left upper square groove, so that the left lower sliding plate 7-7 is in contact with the outer surface of the left rotary bearing 7-1 under the tension action of the left disc spring 7-4, the left upper sliding plate 7-11 is fixed at the left end, the lower part of the left upper sliding plate 7-11 extends downwards to the outer side of the left lower sliding plate 7-7, so that the lower sliding plate is limited to move axially,

the left lower square groove is internally provided with a left lower rolling needle plate 7-9, a left support plate 7-10 and a left locating pin 7-12 from top to bottom in sequence, the left lower bottom plate 7-13 of the left lower square groove is provided with a locating pin locating blind hole, the upper end part of the left locating pin 7-12 is spliced with the blind hole arranged on the left support plate 7-10, the lower end part of the left support plate 7-10 is spliced with the locating pin locating blind hole arranged on the left lower bottom plate 7-13, the upper end of the left support plate 7-10 is in rolling connection with the left upper sliding plate 7-6 through a roller on the left lower rolling needle plate, two sides of the left support plate 7-10 are respectively in sliding connection with the inner wall of the left lower square groove, the right end of the left support plate 7-10 is fixedly provided with a left lower baffle plate 7-15, and the upper end part of the left lower baffle plate 7-15 extends upwards to the outer side of the left upper sliding plate 7-6 so as to achieve the effect of limiting the axial movement of the left upper sliding plate 7-6 and the left lower rolling needle plate 7-9.

The linear reciprocating vibration device 8 comprises a right rotary bearing 8-1, a right linear guide rail 8-2, right screws 8-3, a right disc spring 8-4, a right pressing block 8-5, a right upper sliding plate 8-6, a right lower sliding plate 8-7, a right upper needle roller plate 8-8, a right lower needle roller plate 8-9, a right support plate 8-10, a right upper baffle 8-11, a right locating pin 8-12, a right lower bottom plate 8-13, a right upper top plate 8-14 and a right lower baffle 8-15, wherein the left end face of the right upper sliding plate 8-6 is provided with a left upper square groove II, the front side and the rear side are respectively provided with a right upper sliding rail, the lower end of the left upper square groove II extends downwards and is opened, the right lower square groove II is respectively arranged on the right end face of the right lower sliding plate, the front side and the rear side is respectively provided with a right lower sliding rail, the upper end of the right lower square groove II extends upwards and is provided with an upper bearing II, the bottom face of the right upper sliding plate 8-lower sliding plate is fixedly sleeved with the right upper bearing 8-6, the eccentric shaft 8-1 and the right upper sliding plate 8-6 are fixedly connected with the right upper sliding plate 8-6 through the left upper sliding plate 8-6 and the right upper sliding plate 8-6 through a gap 6 and the right upper sliding plate 8-7, the right upper sliding plate 8-6 and the upper sliding plate 8 and the lower sliding plate 6 are fixedly sleeved with the left sliding plate 8-lower sliding plate 8 and the upper sliding plate 6 through the left upper sliding groove 7 and the upper sliding plate 6 and the upper sliding plate 8 and the sliding plate 6 respectively, the sliding plate 8 and the sliding plate 8. The lower end is fixedly connected with a lower right connecting rod 13, the lower part of the upper right slide plate 8-6 is movably inserted into the upper left square groove II of the lower right slide plate 8-7 and moves relative to the upper left square groove II of the lower right slide plate 8-7, the upper end is fixedly connected with an upper right connecting rod 12,

an upper end face of a right lower sliding block in the left upper square groove II is provided with a right upper needle roller plate 8-8 in a rolling manner, a roller of the right upper needle roller plate 8-8 is provided with a right pressing block 8-5 in a rolling manner, an eccentric moving space is arranged between the right pressing block and a right upper top plate 8-14 of the left upper square groove II, a right disc spring 8-4 is arranged in the eccentric moving space, the lower end of the right disc spring 8-4 is in contact with the right pressing block 8-5, the upper end of the right disc spring 8-4 is in contact with the right upper top plate, a right screw 7-4 movably penetrates through a screw perforation arranged on the right upper top plate and the lower end of the right disc spring 8-4 to be in threaded connection with the right pressing block 8-5, two sides of the right pressing block 8-5 are respectively in sliding connection with two side inner walls of the left upper square groove II, so that the right lower sliding plate 8-7 is in contact with the outer surface of the right rotary bearing 8-1 under the tension of the right disc spring 8-4, the left end of the right upper baffle 8-11 is fixedly provided with a right upper baffle 8-11, the lower portion of the right upper baffle 8-11 extends downwards to the right lower end of the right lower baffle 8-7 and the right upper sliding plate 8-7 is in order to limit the axial movement of the right sliding plate 8-5,

the upper end of the right locating pin 8-12 is inserted into a blind hole formed in the right support plate 8-10, the lower end of the right support plate 8-10 is inserted into a locating pin locating blind hole II formed in the right lower bottom plate 8-13, the upper end of the right support plate 8-10 is in rolling connection with the right upper slide plate 8-6 through a roller on the right lower roller plate, two sides of the right support plate 8-10 are respectively connected with the inner wall of the left upper square groove II in a sliding manner, the right end of the right support plate 8-10 is fixedly provided with a right lower baffle plate 8-15, and the upper end of the right lower baffle plate 8-15 extends upwards to the outer side of the right upper slide plate 8-6 so as to achieve the effect of limiting the axial movement of the right upper slide plate 8-6 and the right lower roller plate 8-9.

According to the utility model, a left eccentric sleeve 15 can be fixedly sleeved between the left eccentric shaft section 4-2 and the left rotary bearing 7-1, a right eccentric sleeve 16 is fixedly sleeved between the right eccentric shaft section 4-5 and the right rotary bearing 8-1, and the eccentric directions of the left eccentric sleeve 15 and the right eccentric sleeve 16 are opposite, so that the effect of stepless adjusting the vibration amplitude can be realized through the left eccentric sleeve 15 and the right eccentric sleeve 16.

The utility model can be provided with the left jacking leg 7-16 at the lower end of the left supporting plate 7-10, the lower end of the left jacking leg is abutted against the left bottom plate after extending out of the lower end face of the left supporting plate, the lower end of the right supporting plate 8-10 is provided with the right jacking leg 8-11, and the lower end of the right jacking leg 8-11 is abutted against the right bottom plate 8-13 after extending out of the lower end face of the right supporting plate 8-10, so that friction heat generation between the left supporting plate and the left bottom plate and between the right supporting plate and the right bottom plate is reduced, and the effect of long service life is achieved.

The utility model can also be provided with a rotating shaft concentricity maintaining device at intervals on the periphery of the box body, the rotating shaft concentricity maintaining device comprises a screw rod and a fixing nut, wherein the screw rod respectively penetrates through the front end face, the supporting plate and the rear end face of the box body in sequence and then is fixedly connected with the box body through the fixing nut in a threaded manner, so that the stable operation of the rotating shaft of the box body in the rotating process is facilitated to be assisted by the screw rod, and the deflection deformation of the rotating shaft in the high-speed operation process is avoided.

By adopting the structure, the utility model has the advantages of novel structure, no vibration of the machine tool, high ultra-precise grinding precision, high workpiece processing stability, high working efficiency, no noise, long service life and the like.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of A-A in fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a cross-sectional view of B-B in fig. 3.

Fig. 5 is a cross-sectional view of E-E of fig. 2.

Fig. 6 is a cross-sectional view of C-C in fig. 3.

Reference numerals: the device comprises a box body 1, an upper weight plate 2, a lower weight plate 3, a rotating shaft 4, a bearing sleeve 6, a linear reciprocating vibration device 7, a rotating shaft vibration absorbing device 8, a driving part 9, a positioning disk 10, a locking nut 11, an upper left connecting rod 12, a lower left connecting rod 13, an upper right guide column 14 and a lower right guide column 15.

A shaft shoulder 4-1, a left eccentric shaft section 4-2, a left positioning disk fixing section 4-3, a left locking thread section 4-4, a right eccentric shaft section 4-5, a right supporting bearing mounting section 4-6 and a driving component connecting section 4-7,

a left rotary bearing 7-1, a left linear guide rail 7-2, a left screw 7-3, a left disc spring 7-4, a left press block 7-5, a left upper slide plate 7-6, a left lower slide plate 7-7, a left upper needle roller plate 7-8, a left lower needle roller plate 7-9, a left support plate 7-10, a left upper baffle plate 7-11, a left positioning pin 7-12, a left lower bottom plate 7-13, a left upper top plate 7-14, a left lower baffle plate 7-15 and a left top column 7-16,

the right rotary bearing 8-1, the rear linear guide rail 8-2, the right screw 8-3, the right disc spring 8-4, the right pressing block 8-5, the right sliding block 8-6, the right upper sliding plate 8-7, the right upper needle roller plate 8-8, the right lower needle roller plate 8-9, the right support plate 8-10, the right upper baffle plate 8-11, the right locating pin 8-12, the right bottom plate 8-13, the right upper top plate 8-14, the right lower baffle plate 8-15 and the right jacking column 8-16.

Description of the embodiments

The utility model is described below with reference to the drawings and examples.

As shown in the drawing, the super-precision linear grinding device of the grinding machine is characterized by comprising a box body 1, an upper counterweight plate 2, a lower counterweight plate 3, a rotating shaft 4, a linear reciprocating vibration device 7, a rotating shaft vibration absorbing device 8, a driving part 9, a positioning disk 10, a locking nut 11, an upper left connecting rod 12, a lower left connecting rod 13, an upper guide post 14 and a lower guide post 15,

by arranging the linear reciprocating vibration device 7 and the rotating shaft vibration absorbing device 8 with opposite eccentric directions and same weight at the two ends of the shaft shoulder 4-1, the centrifugal force generated by the linear reciprocating eccentric motion of the linear reciprocating vibration device is exactly balanced by the reverse centrifugal force balanced by the rotating shaft vibration absorbing device at the left end of the shaft shoulder in the process of driving the vibrating head to perform up-down linear reciprocating motion grinding, so that vibration and noise generated by the eccentric motion of the rotating shaft 4 in the rotating process are eliminated, the ultra-precise grinding precision, the workpiece processing stability and the working efficiency are remarkably improved, the service life is prolonged, and the ultra-precise grinding is realized.

The rotating shaft vibration absorbing device 7 comprises a left rotating bearing 7-1, a left linear guide rail 7-2, a left screw 7-3, a left disc spring 7-4, a left pressing block 7-5, a left upper sliding plate 7-6, a left lower sliding plate 7-7, a left upper needle roller plate 7-8, a left lower rolling needle plate 7-9, a left support plate 7-10, a left upper baffle plate 7-11, a left locating pin 7-12, a left lower bottom plate 7-13, a left upper top plate 7-14,

The left lower baffle 7-15, the left end face of the left upper slide plate 7-6 is provided with a left upper square groove, the front side and the rear side are respectively provided with a left upper slide rail, the lower end of the left upper square groove extends downwards and is opened, the bottom surface of the left upper square groove is provided with a lower bearing perforation downwards from the center, the right end face of the left lower slide plate is provided with a left lower square groove, the front side and the rear side are respectively provided with a left lower slide rail, the upper end of the left lower square groove extends upwards and is opened, the bottom surface of the left lower square groove is provided with an upper bearing perforation upwards from the center, the inner ring of the left rotary bearing 7-1 is fixedly sleeved with the left eccentric shaft section 4-2, the outer ring passes through the lower bearing perforation of the left lower slide plate 7-7 and the upper bearing perforation of the left upper slide plate 7-6 from left to right in sequence, the two sides of the left lower slide plate 7-7 and the left upper slide plate 7-6 are respectively connected with the left linear guide rail 7-2 fixed on the inner side of the box body 1 in an up-down sliding way through the left upper slide rail and the left lower slide rail, the upper part of the left lower slide plate 7-7 is movably inserted into the left upper square groove of the left upper slide plate 7-6 and moves relative to the left upper square groove of the left upper slide plate 7-6, the lower end is fixedly connected with the left lower connecting rod 13, the lower part of the left upper slide plate 7-6 is movably inserted into the left lower square groove of the left lower slide plate 7-7 and moves relative to the left lower square groove of the left lower slide plate 7-7, the upper end is fixedly connected with the left upper connecting rod 12,

When the linear grinding is carried out, the box body is fixed on the support of the grinding machine, then the upper end of the grinding head support is connected with the lower guide post, during the grinding, the driving part 9 is instructed by the control system to act, the driving part 9 drives the rotating shaft to rotate at high speed, the rotating shaft drives the linear reciprocating vibration device 8 and the rotating shaft vibration device 7 to rotate at high speed, when the axle center of the right eccentric shaft section in the linear reciprocating vibration device 8 deviates from the axis of the support shaft shoulder to rotate upwards, the large diameter end of the right eccentric shaft section gradually upwards pushes up the right lower slide plate 8-7 and the right upper slide plate 8-6 through the right rotary bearing, the right lower slide plate 8-7 pushes up the right pressing block 8-5 in the left upper square cavity II through the roller alignment direction on the right upper needle roller plate 8-8, the right pressing block 8-5 moves upwards along the inner walls at two sides of the right upper square cavity II to vertically push up the right disc spring 8-4, the right disc spring 8-4 pushes the right upper slide plate 8-6 to vertically move upwards under the tension, simultaneously the lower guide post at the lower end of the right lower slide plate 8-7 drives the lower guide post to move upwards, and then the grinding head is synchronously moved upwards through the upper guide post and lower guide post,

meanwhile, the axle center of a left eccentric shaft section in the rotating shaft vibration absorbing device just gradually rotates downwards, so that the large diameter end of the left eccentric shaft section downwards pushes a left upper sliding plate and a left lower sliding plate through a left rotating bearing, the left upper sliding plate 7-6 pushes a left pressing block 7-5 to downwards push a left lower sliding plate 7-7 through a left lower needle roller plate, meanwhile, the left upper sliding plate presses a left disc spring 7-4 through a left upper top plate 7-14, so that the left disc spring 7-4 downwards pushes the left upper sliding plate 7-6 through the left pressing block 7-5 and the left upper needle roller plate, the left upper sliding plate 7-6 downwards moves through an upper counterweight plate 2 connected with an upper connecting rod and a lower counterweight plate 3 connected with the left lower sliding plate 7-7 through a lower connecting rod 13, and the rotating shaft vibration absorbing device at one end of a shaft shoulder just counteracts centrifugal force generated by eccentric motion of the linear reciprocating vibration device due to the fact that the eccentric directions of the left eccentric shaft section and the right eccentric shaft section are opposite and the eccentric amounts are equal;

when linear vibration grinding is performed downwards, when the axle center of a right eccentric shaft section in the linear reciprocating vibration device 8 deviates from the axis of a supporting shaft shoulder and rotates downwards, the large-diameter end of the right eccentric shaft section gradually presses down the right lower slide plate 8-7 and the right upper slide plate 8-6 through a right rotary bearing, the right upper slide plate 8-6 pushes the right pressing block 8-5 to push down the right lower slide plate 8-7 through a right lower needle roller plate, meanwhile, the right upper slide plate presses the right disc spring 8-4 through the right upper top plate 8-14, so that the right disc spring 8-4 pushes down the right upper slide plate 8-6 through the right pressing block 8-5 and the right upper needle roller plate 8-8 to move downwards, so that the right upper slide plate 8-6 moves downwards through a grinding head connected with the right lower slide plate 8-7 through the right upper guide post 14 and the right lower guide post 15 to perform linear grinding on the surface of a workpiece,

at the same time, the axle center of the left eccentric shaft section in the rotating shaft vibration absorbing device at the other end of the shaft shoulder deviates from the axis of the supporting shaft shoulder to rotate upwards, the large diameter end of the left eccentric shaft section gradually upwards jacks up the left lower sliding plate 7-7 and the left upper sliding plate 7-6 through the left rotary bearing, the left lower sliding plate 7-7 in the left upper square cavity is aligned with the direction of the roller on the left upper needle roller plate 7-8 and jacks up the left pressing block 7-5, the left pressing block 87-5 moves upwards along the inner walls at the two sides of the right upper square cavity to vertically jack up the left disc spring 7-4, the left disc spring 7-4 pushes the left upper sliding plate 7-6 to vertically upwards move under the action of tension and drives the upper counterweight plate to upwards move through the upper connecting rod, and simultaneously the left lower sliding plate 7-7 drives the lower counterweight plate to synchronously upwards move through the lower connecting rod, and the eccentric directions of the left lower sliding plate and the eccentric shaft section and the eccentric shaft vibration absorbing device at one end exactly offsets the linear vibration grinding motion of the other end to generate centrifugal force, so that the centrifugal force in the grinding process is started and runs at high speed, and the grinding process is avoided, and the box body is provided with the accurate and the precision of grinding precision is further improved because the rotating shaft is kept at the working precision and the precision is kept.

And (3) injection: the superfine grinding referred to in the utility model refers to submicron-level machining with machining precision of less than 0.1 μm and surface roughness of less than 0.025 μm.

Due to the adoption of the structure, the utility model has the advantages of novel structure, no vibration of a machine tool, high precision of superfine grinding, high workpiece processing stability, high working efficiency, no noise, long service life and the like.

Claims

1. A super-precision linear grinding device of a grinding machine is characterized by comprising a box body, an upper counterweight plate, a lower counterweight plate, a rotating shaft, a linear reciprocating vibration device, a rotating shaft vibration absorbing device, a driving component, a positioning disk, a locking nut, an upper left connecting rod, a lower left connecting rod, an upper guide post and a lower guide post, wherein a supporting shaft shoulder is arranged in the middle of the rotating shaft, a left eccentric shaft section, a left positioning disk fixing section and a left locking thread section are sequentially and fixedly arranged at the left end of the supporting shaft shoulder, a right eccentric shaft section, a right supporting bearing mounting section, a right locking thread section and a driving component connecting section are sequentially and fixedly arranged at the right end of the supporting shaft shoulder, the axis center of the left eccentric shaft section is downwards offset relative to the axis shoulder, the axis center of the right eccentric shaft section is upwards offset relative to the axis shoulder, the eccentric shaft section is equal to the eccentric center of the right eccentric shaft section and is opposite in offset direction, the rotating shaft is inserted into the box body, the supporting shaft shoulder is fixedly connected with a supporting plate fixed at the center of the box body through a bearing, the left eccentric shaft vibration absorbing device is arranged on the left eccentric shaft section at the left end of the supporting shaft section, the right eccentric shaft section at the right end of the left end of the supporting shaft shoulder is fixedly provided with a rotating shaft vibration absorbing device, the left eccentric shaft vibration absorbing device penetrates through the upper end of the connecting rod and the upper connecting rod and lower connecting rod through the upper end of the upper connecting rod, the vibration absorbing device, the left vibration absorbing device penetrates through the upper and lower connecting rod and lower connecting piece, and vibration device, and the vibration absorbing device is movably penetrates through the upper box body, and vibration absorbing device, the lower extreme and activity pass the inside lower guide post fixed connection of box, linear reciprocating vibrator is fixed a position on the right eccentric shaft section of support shaft shoulder location right-hand member through the bearing housing of installing on right support bearing installation section, lock nut threaded connection on right threaded connection section, bearing housing outer end warp bearing and box fixed connection, positioning disk and box clearance fit, be fixed with drive part on the drive part link.

2. The super-precision linear grinding device of the grinding machine according to claim 1, which is characterized in that the rotating shaft vibration absorbing device comprises a left rotating bearing, a left linear guide rail, a left screw, a left disc spring, a left pressing block, a left upper sliding plate, a left lower sliding plate, a left upper rolling needle plate, a left lower rolling needle plate, a left support plate, a left upper baffle, a left positioning pin, a left lower bottom plate, a left upper top plate and a left lower baffle, wherein a left upper square groove is arranged on the left end face of the left upper sliding plate, left upper sliding rails are respectively arranged on the front side and the rear side, the lower end of the left upper square groove extends downwards to be opened, a lower bearing perforation is arranged on the bottom surface of the left upper square groove and the lower bearing perforation is arranged on the right end face of the left lower sliding plate, a left lower sliding rail is respectively arranged on the front side and the rear side, the upper end of the left lower square groove extends upwards to be opened, the bottom surface of the left lower square groove is provided with an upper bearing perforation which is upwards deviated from the center, the inner ring of the left rotary bearing is fixedly sleeved with the left eccentric shaft section, the outer ring passes through the lower bearing perforation of the left lower slide plate and the upper bearing perforation of the left upper slide plate from left to right in sequence, the two sides of the left lower slide plate and the left upper slide plate are respectively connected with the left linear guide rail fixed on the inner side of the box body in an up-down sliding way through the left upper slide rail and the left lower slide rail, the upper part of the left lower slide plate is movably inserted into the left upper square groove of the left upper slide plate and moves relative to the left upper square groove of the left upper slide plate, the lower end of the left upper slide plate is fixedly connected with the left lower connecting rod, the lower part of the left upper slide plate is movably inserted into the left lower square groove of the left lower slide plate and moves relative to the left lower square groove of the left lower slide plate, the upper end of the left upper slide plate is fixedly connected with the left upper connecting rod,

the upper end surface of the left lower sliding block in the left upper square groove is provided with a left upper rolling needle plate in a rolling manner, a roller of the left upper rolling needle plate is provided with a left pressing block in a rolling manner, an eccentric moving space is arranged between the left pressing block and the left upper top plate of the left upper square groove, a left disc spring is arranged in the eccentric moving space, the lower end of the left disc spring is in contact with the left pressing block, the upper end of the left disc spring is in contact with the left upper top plate, a left screw movably penetrates through a screw through hole arranged on the left upper top plate and the rear lower end of the left disc spring to be in threaded connection with the left pressing block, two sides of the left pressing block are respectively in sliding connection with the inner walls of two sides of the left upper square groove, so that the left lower sliding plate is in contact with the outer surface of the left rotary bearing under the action of the tension of the left disc spring, the left upper baffle is fixed at the left end of the left pressing block, the lower part of the left upper baffle extends downwards to the outer side of the left lower sliding plate,

the left lower square groove is internally provided with a left lower rolling needle plate, a left support plate and a left locating pin from top to bottom in sequence, the left lower bottom plate of the left lower square groove is provided with a locating pin locating blind hole, the end part of the left locating pin is inserted into the blind hole arranged on the left support plate, the lower end part of the left locating pin is inserted into the locating pin locating blind hole arranged on the left lower bottom plate, the upper end of the left support plate is in rolling connection with the left upper slide plate through a roller on the left lower rolling needle plate, two sides of the left support plate are respectively in sliding connection with the inner wall of the left lower square groove, the right end of the left support plate is fixedly provided with a left lower baffle, and the upper end part of the left lower baffle extends upwards to the outer side of the left upper slide plate.

3. The super-precision linear grinding device of the grinding machine according to claim 2, wherein the linear reciprocating vibration device comprises a right rotary bearing, a right linear guide rail, a right screw, a right disc spring, a right pressing block, an upper right sliding plate, a lower right sliding plate, an upper right rolling needle plate, a lower right rolling needle plate, a right support plate, an upper right baffle, a right locating pin, a lower right bottom plate, an upper right top plate and a lower right baffle, wherein the left end face of the upper right sliding plate is provided with an upper left square groove II, the front side and the rear side are respectively provided with an upper right sliding rail, the lower end of the upper left square groove II extends downwards to be opened, the bottom face of the upper left square groove II is downwards deviated from the center to be provided with a lower bearing perforation, the right end face of the lower right sliding plate is provided with a lower right square groove II, the front side and the rear side are respectively provided with a lower right sliding rail, the upper end of the lower right square groove II extends upwards to be opened, the bottom face of the upper left square groove II is upwards deviated from the center to be provided with an upper bearing perforation II, the inner ring of the right rotary bearing is fixedly sleeved with the right eccentric shaft section, the outer ring sequentially penetrates through the lower bearing perforation of the right lower slide plate and the upper bearing perforation II of the right upper slide plate from left to right, the two sides of the right lower slide plate and the right upper slide plate are respectively connected with the right linear guide rail fixed on the inner side of the box body in an up-down sliding way through the right upper slide rail and the right lower slide rail, the upper part of the right lower slide plate is movably inserted into the left upper square groove II of the right upper slide plate and moves relatively to the left upper square groove II of the right upper slide plate, the lower end of the right upper slide plate is fixedly connected with the right upper connecting rod, the upper end face of the right lower slide block in the left upper square groove II is in rolling seat with the right upper needle roller plate, the roller of upper right roller plate rolls on and sits there is the right briquetting, be equipped with eccentric removal space between the upper right roof of right briquetting and upper left square recess II, be equipped with right dish spring in the eccentric removal space, right dish spring lower extreme is inconsistent with the right briquetting, and the upper end is inconsistent with the upper right roof, and right screw activity is equipped with screw perforation and right dish spring back lower extreme and the right briquetting threaded connection on the upper right roof, right briquetting both sides respectively with upper left square recess II both sides inner wall sliding connection to make the lower right slide under the tension effect of right dish spring with right swivel bearing surface inconsistent, upper right baffle is fixed with upper right baffle lower part downwardly extending to the lower right slide outside, be equipped with lower right roller plate, right extension board and right locating pin in proper order from top to bottom in the upper left square recess II, be equipped with locating pin locating blind hole II on the lower right bottom plate on the upper left square recess II, the tip is pegged graft mutually with right briquetting threaded connection with right side lower plate inner wall sliding bearing surface under the tension effect of right disc, lower right extension board upper right extension board is equipped with right extension board upper right extension board, upper right side rolling support plate and right side rolling support plate is connected to the upper right side rolling support plate.

4. A grinding machine superfinishing linear grinding device according to claim 3, wherein a left eccentric sleeve is fixedly sleeved between the left eccentric shaft section and the left rotary bearing, a right eccentric sleeve is fixedly sleeved between the right eccentric shaft section and the right rotary bearing, and the eccentric directions of the left eccentric sleeve and the right eccentric sleeve are opposite.

5. The super-fine linear grinding device of claim 4, wherein a left prop is arranged at the lower end of the left support plate, the lower end of the left prop is abutted against the left bottom plate after extending out of the lower end surface of the left support plate, a right prop is arranged at the lower end of the right support plate, and the lower end of the right prop is abutted against the right bottom plate after extending out of the lower end surface of the right support plate.

6. The super-fine linear grinding device of a grinding machine according to claim 1, 2, 4 or 5, wherein the peripheral of the box body is provided with a rotating shaft concentricity maintaining device at intervals, the rotating shaft concentricity maintaining device comprises a screw rod and a fixing nut, and the screw rod is fixedly connected with the box body through the fixing nut after sequentially penetrating through the front end face, the supporting plate and the rear end face of the box body respectively.